Slopes: Lauren has a great way to help students with finding the slope given 2 points. It is called Bottom Top Bottom Top. I can not currently put it up on the wikispace for a demonstration, but I will try in the near future. Ask Lauren or Heather for a demonstration. I (Heather) have found that it diminishes the students confusion with y1 y2 etc...
Slopes: Lauren has a great way to help students with finding the slope given 2 points. It is called Bottom Top Bottom Top. I can not currently put it up on the wikispace for a demonstration, but I will try in the near future. Ask Lauren or Heather for a demonstration. I (Heather) have found that it diminishes the students confusion with y1 y2 etc...